An inlet air device for a spray drying tower

Abstract

The utility model discloses a kind of spray drying tower air inlet device, it is related to general physical or chemical method or device technical field.A kind of spray drying tower air inlet device, including spray drying tower main body, feed pipe, discharge pipe and air inlet pipeline, filter device is provided on spray drying tower main body, filter device includes filter box, high-efficiency filter screen component, medium-efficiency filter screen component and primary-efficiency filter screen component, hot air is sent into filter box inside by external equipment in filter device, then primary-efficiency filter screen component in filter box, medium-efficiency filter screen component and high-efficiency filter screen component are sequentially filtered to hot air, primary-efficiency filter screen component first intercepts larger particle impurities, medium-efficiency filter screen component further filters medium particle impurities, high-efficiency filter screen component is then fine filter to tiny particle, after three-stage filtration, relatively clean hot air enters spray drying tower main body inside by the connecting passage of filter box and air inlet pipeline.

Description

Technical Field

[0001] This utility model relates to the field of general physical or chemical methods or apparatus technology, and in particular to an air inlet device for a spray drying tower. Background Technology

[0002] During the operation of a spray drying tower, the quality of the incoming air plays a crucial role in the drying effect and product quality. Spray drying, a technology that rapidly dries liquid materials into powdered products through atomization and contact with hot airflow, is widely used in many fields such as food, pharmaceuticals, and chemicals. As a key component of the spray drying tower, the performance of the air inlet device directly affects the stability and efficiency of the entire drying process.

[0003] Currently, in the air intake stage of spray drying towers, the outside air often contains various impurities before entering the tower, such as large dust particles, medium-sized particles, and fine dust. If these impurities are not treated and enter the drying tower directly with the air intake, they will have many adverse effects on the drying process and product quality. At the same time, in the food and pharmaceutical industries, the requirements for product hygiene standards and purity are extremely high. Once impurities in the air intake mix into the product, they will not only affect the appearance of the product and cause defects, but may also introduce harmful substances such as microorganisms and bacteria, seriously threatening consumers' health. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an air inlet device for a spray drying tower. This device can solve the problem that outside air often contains various impurities before entering the spray drying tower, such as large dust particles, medium-sized particles, and fine dust. If these impurities are not treated and directly enter the drying tower with the air inlet, they will have many adverse effects on the drying process and product quality. At the same time, in the food and pharmaceutical industries, the hygiene standards and purity requirements for products are extremely high. Once impurities in the air inlet are mixed into the product, they will not only affect the appearance of the product and cause product defects, but may also introduce harmful substances such as microorganisms and bacteria, seriously threatening the health of consumers.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a spray drying tower air inlet device, comprising a spray drying tower body, an inlet pipe, an outlet pipe and an air inlet pipe, wherein a filter device is provided on the spray drying tower body;

[0006] The filtration device includes a filter box, a high-efficiency filter assembly, a medium-efficiency filter assembly, and a primary filter assembly. Three fixed mounting seats are fixedly connected to the outer walls on both sides of the upper end of the filter box. The filter box is fixedly installed on the upper surface of the spray drying tower body. A first limiting block groove is opened on the outer wall of the opposite side of the three sets of fixed mounting seats. A limiting block is slidably connected inside the three sets of first limiting block grooves. A second limiting block groove is opened on both sides of the upper fixing plate of the high-efficiency filter assembly. The same second limiting block groove is opened on both sides of the upper fixing plate of the medium-efficiency filter assembly.

[0007] The primary filter assembly has two identical second limiting block grooves on the outer walls of both sides of the upper fixing plate. The filter box has three sliding grooves on its upper surface. The outer wall of the primary filter assembly is slidably connected to the front sliding groove of the spray drying tower body. The outer wall of the high-efficiency filter assembly is slidably connected to the rear sliding groove of the spray drying tower body. The outer wall of the medium-efficiency filter assembly is slidably connected to the middle sliding groove of the spray drying tower body. Push block grooves are provided on both sides of the outer walls of the three sets of fixed mounting seats. Push blocks are slidably connected inside the twelve push block grooves. Two pull rods are slidably connected to the outer walls of the three sets of fixed mounting seats. Rubber limiting blocks are provided inside the twelve push block grooves. Return springs are sleeved on the outer walls of the twelve pull rods.

[0008] Preferably, the six fixed mounting brackets are arranged in groups of two;

[0009] Among them, the ends of the three sets of limiting blocks near the second limiting block groove all slide to the outside of the first limiting block groove and are respectively slidably connected to the inside of the corresponding second limiting block groove.

[0010] Preferably, the ends of the twelve pull rods near the limiting block all slide into the interior of the first limiting block groove and are respectively fixedly connected to the outer wall of the corresponding limiting block;

[0011] The interiors of the twelve push block slots are connected to the interiors of the corresponding first limit block slots.

[0012] Preferably, one end of each of the twelve push blocks near the limiting block slides into the interior of the first limiting block groove and is fixedly connected to the outer walls on both sides of the corresponding limiting block, and the two ends of the twelve rubber limiting blocks contact the inner wall of the corresponding push block groove and the outer wall on one side of the push block, respectively.

[0013] The two ends of the twelve reset springs are fixedly connected to the outer wall of the corresponding limit block and the inner wall of the first limit block groove, respectively.

[0014] Preferably, the air inlet duct is fixedly installed on the upper surface of the spray drying tower body, and one end of the filter box is connected to one end of the air inlet duct through a flange;

[0015] The interior of the spray drying tower is connected to the interior of the air inlet duct.

[0016] Preferably, the feed pipe is fixedly installed on the upper surface of the spray drying tower body, and the interior of the spray drying tower body is in communication with the interior of the feed pipe;

[0017] The discharge pipe is fixedly installed at the bottom of the lower end of the spray drying tower body, and the interior of the spray drying tower body is connected to the interior of the discharge pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The air inlet device of this spray drying tower sends hot air into the filter box through external equipment in the filtration device. Then, the pre-filter, medium-efficiency filter and high-efficiency filter in the filter box filter the hot air in sequence. The pre-filter first intercepts larger particles of impurities, the medium-efficiency filter further filters medium-sized particles of impurities, and the high-efficiency filter performs fine filtration of tiny particles. After three stages of filtration, the relatively clean hot air enters the main body of the spray drying tower through the connection channel between the filter box and the air inlet duct. This avoids untreated particles and fine dust in the air from directly entering the spray drying tower with the air inlet, thereby effectively improving the practicality and effectiveness of the equipment. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the external structure of the primary filter assembly of this utility model;

[0023] Figure 3 This utility model Figure 2 A structural schematic diagram of the enlarged view at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the internal structure of the filter box of this utility model.

[0025] Figure 5 This utility model Figure 2 A structural schematic diagram of the enlarged view at point B in the middle.

[0026] Reference numerals in the attached drawings: 1. Main body of spray drying tower; 2. Filter box; 3. Feed pipe; 4. Discharge pipe; 5. High-efficiency filter assembly; 6. Medium-efficiency filter assembly; 7. Primary filter assembly; 8. Fixed mounting base; 9. Pull rod; 10. Rubber limit block; 11. Push block; 12. Limit block; 13. Return spring; 14. Push block groove; 15. First limit block groove; 16. Second limit block groove; 17. Air inlet pipe. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] Please see Figure 1-5 This utility model provides a technical solution: a spray drying tower air inlet device, including a spray drying tower body 1, a feed pipe 3, a discharge pipe 4 and an air inlet pipe 17;

[0032] A filtration device is installed on the main body 1 of the spray drying tower;

[0033] The filtration device includes a filter box 2, a high-efficiency filter assembly 5, a medium-efficiency filter assembly 6, and a primary filter assembly 7. Three fixed mounting bases 8 are fixedly connected to the outer walls of both sides of the upper end of the filter box 2. The six fixed mounting bases 8 are arranged in pairs. The filter box 2 is fixedly installed on the upper surface of the spray drying tower body 1. A first limiting block groove 15 is formed on the outer wall of one side of the opposite side of each of the three sets of fixed mounting bases 8. A limiting block 12 is slidably connected inside each of the three sets of first limiting block grooves 15. Second limiting block grooves 16 are formed on both sides of the upper fixed plate of the high-efficiency filter assembly 5. The medium-efficiency filter... The upper fixing plate of the mesh assembly 6 has the same second limiting block groove 16 on both outer walls. The upper fixing plate of the primary filter assembly 7 has the same second limiting block groove 16 on both outer walls. The upper surface of the filter box 2 has three sliding grooves. The outer wall of the primary filter assembly 7 is slidably connected to the front sliding groove of the spray drying tower body 1. The outer wall of the high-efficiency filter assembly 5 is slidably connected to the rear sliding groove of the spray drying tower body 1. The outer wall of the medium-efficiency filter assembly 6 is slidably connected to the middle sliding groove of the spray drying tower body 1. The three sets of limiting blocks 12 are close to the second limiting block groove 16. One end of each of the twelve fixed mounting bases 8 slides to the outside of the first limiting block groove 15 and is slidably connected to the inside of the corresponding second limiting block groove 16. Push block grooves 14 are provided on both outer walls of the three sets of fixed mounting bases 8. Push blocks 11 are slidably connected to the inside of each of the twelve push block grooves 14. Two pull rods 9 are slidably connected to the outer walls of the three sets of fixed mounting bases 8. One end of each of the twelve pull rods 9 near the limiting block 12 slides to the inside of the first limiting block groove 15 and is fixedly connected to the outer wall of the corresponding limiting block 12. The inside of each of the twelve push block grooves 14 is slidably connected to the inside of the corresponding first limiting block groove 16. The interiors of the 5 are interconnected. The ends of the twelve push blocks 11 near the limiting block 12 all slide into the interior of the first limiting block groove 15 and are fixedly connected to the outer walls on both sides of the corresponding limiting block 12. The interiors of the twelve push block grooves 14 are all provided with rubber limiting blocks 10. The two ends of the twelve rubber limiting blocks 10 are in contact with the inner wall of the corresponding push block groove 14 and the outer wall on one side of the push block 11, respectively. The outer walls of the twelve pull rods 9 are all fitted with return springs 13. The two ends of the twelve return springs 13 are fixedly connected to the outer wall of the corresponding limiting block 12 and the inner wall of the first limiting block groove 15, respectively.

[0034] The air inlet duct 17 is fixedly installed on the upper surface of the spray drying tower body 1. One end of the filter box 2 is connected to one end of the air inlet duct 17 through a flange. The interior of the spray drying tower body 1 is connected to the interior of the air inlet duct 17. The feed pipe 3 is fixedly installed on the upper surface of the spray drying tower body 1. The interior of the spray drying tower body 1 is connected to the interior of the feed pipe 3. The discharge pipe 4 is fixedly installed at the bottom of the lower end of the spray drying tower body 1. The interior of the spray drying tower body 1 is connected to the interior of the discharge pipe 4.

[0035] Furthermore, when using this device, during the operation of the air inlet device of the spray drying tower, one end of the filter box 2 is first connected to the external equipment via a flange. Then, the external equipment sends hot air into the filter box 2. The primary filter assembly 7, the medium-efficiency filter assembly 6, and the high-efficiency filter assembly 5 within the filter box 2 sequentially filter the hot air. The primary filter assembly 7 first intercepts larger particles of impurities, the medium-efficiency filter assembly 6 further filters medium-sized particles, and the high-efficiency filter assembly 5 performs fine filtration of tiny particles. After three stages of filtration, the relatively clean hot air enters the spray drying tower body 1 through the connection between the filter box 2 and the air inlet pipe 17. Then, the material to be dried enters the spray drying tower body 1 through the feed pipe 3, where it comes into full contact with the filtered hot air. The hot air evaporates and carries away the moisture in the material, achieving drying. Material is discharged from the discharge pipe 4 at the bottom of the spray drying tower body 1. When the filter assembly needs to be cleaned or replaced, first pull the handle of the rubber limit block 10 to remove it from the inside of the push block groove 14. Then, the operator pushes the push block 11, which drives the limit block 12 to slide in the first limit block groove 15, overcoming the elastic force of the return spring 13, so that the limit block 12 is disengaged from the second limit block groove 16 of the high-efficiency filter assembly 5, the medium-efficiency filter assembly 6, and the primary filter assembly 7. At this time, the filter assembly can be pulled out along the slide groove on the upper surface of the filter box 2 for cleaning or replacement. After the operation is completed, the new or cleaned filter assembly is slid back into its original position along the slide groove. The push block 11 is released, and under the action of the return spring 13, the limit block 12 is re-engaged into the second limit block groove 16, completing the installation and fixing of the filter assembly and ensuring that the air inlet device continues to work normally.

[0036] Hot air is introduced into the filter box 2 through external equipment in the filtration device. Then, the primary filter assembly 7, the medium-efficiency filter assembly 6, and the high-efficiency filter assembly 5 in the filter box 2 filter the hot air in sequence. The primary filter assembly 7 first intercepts larger particles of impurities, the medium-efficiency filter assembly 6 further filters medium-sized particles of impurities, and the high-efficiency filter assembly 5 performs fine filtration of tiny particles. After three stages of filtration, the relatively clean hot air enters the spray drying tower body 1 through the connection channel between the filter box 2 and the air inlet duct 17. This avoids untreated particles and fine dust in the air from directly entering the spray drying tower body 1 with the air inlet, thereby effectively improving the practicality and effectiveness of the equipment.

[0037] Structural Description: Spray Drying Tower Main Body 1: As the core load-bearing component of the entire device, its interior provides space for material drying. The upper surface of the spray drying tower main body 1 is used to install the filter device and feed pipe 3, the lower bottom is used to install the discharge pipe 4, and the side is connected to the air inlet pipe 17 to realize the entry and exit of materials and hot air. It is the place where the entire drying process takes place.

[0038] Filter box 2: It has a box structure. Three fixed mounting seats 8 are fixedly connected to the outer walls on both sides of the upper end. The filter box 2 is securely installed on the upper surface of the spray drying tower body 1 by using these six fixed mounting seats 8 in pairs. The upper surface of the filter box 2 has three sliding grooves, which are used to install the primary filter screen assembly 7, the medium efficiency filter screen assembly 6 and the high efficiency filter screen assembly 5 respectively. One end of the filter box 2 is connected to one end of the air inlet pipe 17 through a flange, so that the air in the air inlet pipe 17 can be filtered by the filter box 2 before entering the interior of the spray drying tower body 1.

[0039] High-efficiency filter assembly 5, medium-efficiency filter assembly 6, and primary filter assembly 7: all are filter assemblies with similar structures. The outer walls on both sides of their upper fixing plates are provided with second limiting block grooves 16 for fixing with limiting blocks 12. The outer wall of high-efficiency filter assembly 5 is slidably connected to the interior of the rear slide groove of the spray drying tower body 1, the outer wall of medium-efficiency filter assembly 6 is slidably connected to the interior of the middle slide groove of the spray drying tower body 1, and the outer wall of primary filter assembly 7 is slidably connected to the interior of the front slide groove of the spray drying tower body 1. Filter assemblies of different filtration levels are arranged in sequence to perform graded filtration of the incoming air.

[0040] Fixed mounting bases 8: There are six in total, distributed in pairs on the outer walls of the upper two sides of the filter box 2. The outer walls of the opposite sides of the three sets of fixed mounting bases 8 are provided with first limiting block grooves 15 for sliding of limiting blocks 12. Push block grooves 14 are provided on both sides of the outer walls for installing push blocks 11. Two pull rods 9 are also slidably connected to the outer walls. Through these structures, the fixing and disassembly operations of the filter assembly can be realized.

[0041] Limiting blocks 12: There are three sets, two in each set. They are slidably connected inside the first limiting block groove 15. One end near the second limiting block groove 16 can slide to the outside of the first limiting block groove 15 and is slidably connected to the inside of the corresponding second limiting block groove 16, thereby fixing the high-efficiency filter assembly 5, the medium-efficiency filter assembly 6 and the primary filter assembly 7 in the filter box 2.

[0042] Push blocks 11: There are twelve in total, which are slidably connected inside the twelve push block slots 14. The end near the limit block 12 extends slidably into the interior of the first limit block slot 15 and is fixedly connected to the outer walls on both sides of the corresponding limit block 12. Pushing the push block 11 can drive the limit block 12 to move.

[0043] Rubber limiting blocks 10: There are twelve in total, which are set inside the twelve push block grooves 14. Their two ends contact the inner wall of the corresponding push block groove 14 and the outer wall of one side of the push block 11, respectively, so as to buffer and limit the movement and prevent the push block 11 from sliding excessively.

[0044] Pull rods 9: There are twelve in total. Each of them has a return spring 13 sleeved on its outer wall. The end near the limit block 12 slides into the interior of the first limit block groove 15 and is fixedly connected to the outer wall of the corresponding limit block 12. The two ends of the return spring 13 are fixedly connected to the outer wall of the corresponding limit block 12 and the inner wall of the first limit block groove 15, respectively. When disassembling the filter assembly, pulling the pull rod 9 overcomes the elastic force of the return spring 13 to make the limit block 12 disengage from the second limit block groove 16. After releasing the pull rod 9, the return spring 13 makes the pull rod 9 and the limit block 12 return to their original positions.

[0045] Feed pipe 3: It is fixedly installed on the upper surface of the spray drying tower body 1, and its interior is connected to the interior of the spray drying tower body 1. It is used to transport the material to be dried into the interior of the spray drying tower body 1.

[0046] Discharge pipe 4: Fixedly installed at the bottom of the lower end of the spray drying tower body 1, its interior is connected to the interior of the spray drying tower body 1, and is used to discharge the dried material from the interior of the spray drying tower body 1;

[0047] Air inlet duct 17: It is fixedly installed on the upper surface of the spray drying tower body 1, and one end is connected to the filter box 2 through a flange. Its interior is connected to the interior of the spray drying tower body 1. It is used to deliver hot air to the interior of the spray drying tower body 1 to provide heat for material drying.

[0048] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A spray drying tower air inlet device, comprising a spray drying tower body (1), a feed pipe (3), a discharge pipe (4), and an air inlet pipe (17), characterized in that: A filtration device is provided on the main body (1) of the spray drying tower; The filtration device includes a filter box (2), a high-efficiency filter assembly (5), a medium-efficiency filter assembly (6), and a primary filter assembly (7). Three fixed mounting seats (8) are fixedly connected to the outer walls on both sides of the upper end of the filter box (2). The filter box (2) is fixedly installed on the upper surface of the spray drying tower body (1). A first limiting block groove (15) is opened on the outer wall of the opposite side of the three sets of fixed mounting seats (8). A limiting block (12) is slidably connected inside the three sets of first limiting block grooves (15). A second limiting block groove (16) is opened on both sides of the upper fixing plate of the high-efficiency filter assembly (5). The same second limiting block groove (16) is opened on both sides of the upper fixing plate of the medium-efficiency filter assembly (6). Among them, the upper fixed plate of the primary filter assembly (7) is provided with the same second limiting block groove (16) on both sides of the outer wall. The upper surface of the filter box (2) is provided with three sliding grooves. The outer wall of the primary filter assembly (7) is slidably connected to the front sliding groove of the spray drying tower body (1). The outer wall of the high efficiency filter assembly (5) is slidably connected to the rear sliding groove of the spray drying tower body (1). The outer wall of the medium efficiency filter assembly (6) is slidably connected to the middle sliding groove of the spray drying tower body (1). The outer walls of the three sets of fixed mounting bases (8) are provided with push block grooves (14) on both sides. The twelve push block grooves (14) are slidably connected with push blocks (11). The outer walls of the three sets of fixed mounting bases (8) are slidably connected with two pull rods (9). The twelve push block grooves (14) are provided with rubber limiting blocks (10). The outer walls of the twelve pull rods (9) are sleeved with reset springs (13).

2. The air inlet device for a spray drying tower according to claim 1, characterized in that: The six fixed mounting bases (8) are arranged in pairs; Among them, the ends of the three sets of limiting blocks (12) near the second limiting block groove (16) all slide to the outside of the first limiting block groove (15) and are respectively slidably connected to the inside of the corresponding second limiting block groove (16).

3. The air inlet device for a spray drying tower according to claim 1, characterized in that: The ends of the twelve pull rods (9) near the limiting block (12) all slide into the interior of the first limiting block groove (15) and are fixedly connected to the outer wall of the corresponding limiting block (12); The interiors of the twelve push block slots (14) are connected to the interiors of the corresponding first limiting block slots (15).

4. The air inlet device for a spray drying tower according to claim 1, characterized in that: The ends of the twelve push blocks (11) near the limiting block (12) all slide into the interior of the first limiting block groove (15) and are fixedly connected to the outer walls on both sides of the corresponding limiting block (12). The two ends of the twelve rubber limiting blocks (10) are in contact with the inner wall of the corresponding push block groove (14) and the outer wall on one side of the push block (11). The two ends of the twelve reset springs (13) are fixedly connected to the outer wall of the corresponding limit block (12) and the inner wall of the first limit block groove (15), respectively.

5. The air inlet device for a spray drying tower according to claim 1, characterized in that: The air inlet pipe (17) is fixedly installed on the upper surface of the spray drying tower body (1), and one end of the filter box (2) is connected to one end of the air inlet pipe (17) through a flange; The interior of the spray drying tower body (1) is connected to the interior of the air inlet pipe (17).

6. The air inlet device for a spray drying tower according to claim 1, characterized in that: The feed pipe (3) is fixedly installed on the upper surface of the spray drying tower body (1), and the interior of the spray drying tower body (1) is connected to the interior of the feed pipe (3); The discharge pipe (4) is fixedly installed at the bottom of the lower end of the spray drying tower body (1), and the interior of the spray drying tower body (1) is connected to the interior of the discharge pipe (4).

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